Mix crushed cookies, melted butter, and sugar in a bowl. Press the mixture firmly into the bottom of your springform pan. Bake at 325°F (160°C) for 10 minutes, then set aside to cool.
Beat cream cheese and sugar until smooth and fluffy. Add vanilla, sour cream, heavy cream, and cornstarch. Mix until fully combined—no lumps!
Pour the batter over the cooled crust. Tap the pan to remove air bubbles. Bake at 325°F for about 55–60 minutes, or until the center is slightly jiggly. Let it cool on a wire rack before refrigerating for at least 4 hours (overnight is best!).
In a saucepan, combine strawberries, sugar, and lemon juice. Cook over medium heat until bubbling. Add the cornstarch slurry and stir until thickened. Let it cool completely.
Combine flour, sugar, butter, and salt. Mix until it forms pea-sized crumbles. Bake at 350°F (175°C) for 10–12 minutes, until golden brown. Cool before using.
Spread the strawberry compote over the chilled cheesecake. Sprinkle with shortcake crumble and garnish with fresh strawberries and whipped cream if desired.